<?php
// $array = array(4,5,1,2,3,1,2,1);
// $ac = array_count_values($array);
// print_r($ac);

// $array = array('key1' => 'value1', 'key2' => 'value2','key3' => 'value3');
// extract($array);
// echo "$key1 $key2 $key3";

echo strlen("hello  world");
